Carriage for type-writing machines.



No. 835,823. I PATENTED NOV.'13, 1906.

- H. HILL.

OARRIAGB FOR TYPE WRITING MACHINES.

APPLICATION FILED APB.14,1902.

' 2 SHEETS-SHEET 1.

gtweutoz arto'nw ga Q/vamum PATENTED Nov. 13, 1906.

H. HILL. CARRIAGE FOR TYPE WRITING MACHINES.

APPLICATION I'IL'ED APR-14.1902.

2 SHEETS-SHEET 2.

witnesses UNITED STATES PATENT ent re.

HERMANN-HILL, OF SAVANNAH'GEORGIA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO PRENDERGAST- ELECTRIC TYPEWRlTER' COMPANY, A CORPORATION OF MA INE.; a

. CARRIAGE. FOR TYPE-WRITING MACHINES.

Patented Nov. 13, 1906.

To all whom-it may concern.-

. Be it known that I, HERMANN HILL, a subject of the Emperor of Austria, and a'resident carriage the required distance upon the mounted in guides 2, carrie movement of any key-lever or the spacinglever and which sl'1'all be applicable not only to motor-actuated machines, such sis-electricallyoperated machines, but to any machine in which the movementof the key-levers and spacing-lever controls a movable element of the machine for transmitting motion to the teeding devices.

My object also is to provide a simple device on the carriage whereby different widths of paper may be used: with the least number of parts and the simplest mode of operation.

Vfith these objects inview my invention consists of the novel construction and details thereof, as hereinafter described with reference to the accompanying drawings and more particularly pointed out in the claims.

In the drawings, Figure 1 is a vertical section of a carriage with the connected parts according to my invention and, so much of the frame of a machine as to show the application of my invention thereto. Fig. 2 is a bottom plan view. Fig. 3 is an end view of the carriage. Figs. 4, 5, and 6 are enlarged details of the carriage-feeding devices, and Fig. 7 is an enlarged detail of a preferred modification.

. In the drawings, where the same charac,

ters relate to the same or corresponding arts in all the views, the carria e 1 is. sli ably by brackets 3, fixed to the frame4 of the machine, said carriage being preferably in the form of a U-bar, between the upper and lower-flanges of which are rollers 5,'mounted in suitable antifrictionbearings, the peripheries of said rolls being confined to travel in grooves in the guides 2.

Projecting from the bottom flange of the carriage 1' are two rack-bars 6 and 7, the former preferably having curved teeth adapted.

pawl 10 is in the form of a tooth formed to engage with the tooth of the to be engaged by a roll 8,. yieldingly held in contact with said teeth by a spring 9, fixed to one of the guides 2, on which spring said roll is supported. The purpose of this rackbar and its cooperating roll or pawl is to i anism; my object is to provide a caniagefeeding -mechanism which shall positively feed the The carriage-feeding mechanism is best seen by reference to Figs. 1, 4, 5, and 6, where the rack-bar'7 is shown extending downwardly from the carriage 1, with which bar the pawl 10 is adapted to enga e. The

plate ha a rack-bar 7 and is slidably mounted in guide- Ways in a horizontal slide 11, adapted to reciprocate in a slideway in a plate 12, fixed to the frame 4 of the machine. A pin 13 pro: jects from the slide 11 into a slot 14 in the pawl to limit the extent of its movement. The slide 11 is held in frictional contact with its supporting-pl 1,136 12 by a frictional device consisting in the present instance of a spring 15, (see Fig. 6,) confined between a collar '16 on a stud 17 and a bearing plate or collar 18, which stud projects from the plate 1.1 throu an-elongated slot '19 in the plate 12. The pawl is so mounted in a diagonal guideway-in the plate 11 that the frictional resistance be-' tween the two shall be appreciably less than that between the plate 11 and its guiding or supporting plate 12, whereby when a pull is exerted upon the pawl in a horizontal direction it will first move in its guideway, thereby causing the tooth of said pawl to advance into engagement with a tooth on the'rackbar 7, and further force in the same direction will cause'both pawl and the slide 1 1 to move in the direction of-pull, and consequently ef feet the movement of the carriage one tooth or the proper space. This difference in frictional resistance between the two parts reduces to a minimum the force necessary toset the pawl in position to effectthe actual motion of translation of the carriage.

In order to set the pawl in the manner above noted, as by means of the movable armature of an electromagnet or other movable element of the machine, a link'20, pivoted at 21 toithe pawl, connects the latter to a hell- 2 ceases pin is engaged by the forked end of a lever 29, fulcrumed at 30, and having its other end engaging the pin 31, carried by the armature 732 or other movable element of the machine, which is controlled by the movement of the key-levers or spacingleven Movement of the armature upon the depression of a key throws the forward forked end of the lever 29 downward, thereb depressing the lever 26 downward, and ikewise lowering the pointed-end of the lever 22, thereby causmg the link 21 to ush the pawl downward m its slidewayon t slide 11, andcontinued downward movement of the lever 26 moves the pawl and slide backward to a osition for the next advance movement of the pawl. The bell-crank 22isconnected to a rod 33,

passing through a guiding hole or slot on the frame 4 and having a helical 's ring 34 at its outer'end bearing against a collar on said rod and against the frame. Upon the depression of the lever 26 this spring, which is under compression, is further compressed on the movement of the rod 33 by the bell-crank 22,

when the'latter sets the pawl, as above described, and hence the moment the keylever is released and, in the example shown, the circuit broken and the armature returns to its inactive position the first effect of the conse uent reverse movement of the lever 26-t at is, upwardly-is to cause the pawl to slide upwardlyon the slide 11 and engage the-tooth of the bar 7, as shown in Fig. 4. The spring 34 being now free to exert its full force pulls the lever 22, the pawl 10, and slide 11 horizontally the distance required to move the carriage onetooth or proper space'. v The action of. the feeding pawl or dog'lO is thus seen to embody a fourcycle motion, for when the lever 26 is depressed by the link connection between it and the armature or other movable element of the machine the first motion is a diagonall -downward motion of the pawl in its gui e on the plate 11, disengaging the tooth from the rack-bar 7, and the final downward motion of the lever 26 causes the pawl to move with the plate 11 bodily backward into position under the next tooth of the rack 7,

and while such movements are taking place the typawheel has been brought to printing position, and the hammer then delivers its blow. Then immediately upon the release of the key or breaking of the circuit the armature falls, during the. first part of which falling movement of the armature the pawl is.

pulled upwardly into engagement with the rack 7, and the spring 34, exerting its pull upon the lever 22, positively pulls the pawl and the plate 1'1 horizontally forward, thereby imp'artlng a positive feeding movement to thecam'iage, the latter not being connected directly with any spring or like device. Simultaneously with the completion of the return downward movement of the armature the spring 34 completes its pulling of the awl 10 to the left, and the lever 26 is then in 7 5 its normal position, where no further force can be imparted to the pawl by the spring. Near the limit of this movement the power of the spring 3 10f coursedecreases, but the imgiven to the carriage, by reason of the ease with whichit is adapted to .move, may tend to impart a greater extent of movement than that desired, and in order toprevent this result the roll 8 on the spring-pawl 9 slips into engagement with a tooth on the bar 6, the presure being sufficient to check the movement of the carriage due to the momentum, but not suflicient to interfere with the direct and positive movement of said. carriage by the pawl 10 when the latter is un- -der the action of the spring 3 1 during the necessary part of the carriage movement to *hift the same a sufficient distance for the s acing, such pawl 8 holding the carriage until the next operation of the pawl 10. v

-The line-spacing devices are not shown, as they may be of any well-known type of pawland-ratchet me0h&I1lSII1,I10IlS it deemed necessary to show the carriage-shiftin lever for returnin the carriageat the comp etion of a we line, sue

ype and forming nopa'rt of my present mvention. It may be noted, however, in this connection that as the normal position of the pawl 10' (see Fig. 4) would ordinarily prevent r05 shifting the carriage to the right it is only necessary to press down upon the space bar, thereby'com leting the c1rcuit throughthe gnet as t e carriage is' shifted, wh reby the first or downward movement of the-dog no is effected by' the motor and permits the shifting of the carriage.

In the preferred construction, 'a detail of which is shown in Fig. 7, I avoid the necessity of touching the sglaice-bar or other oper- I r 5 shifting-lever being of' any known part to permit-s fting of the carriage,

the constructlon, as Wlll appear from the following description. crank. lever 22-'*is mounted, as before, on the fixed frame, as on the extension 24:, and, is connected by the link 20 to the pawl 10, but I 5 instead of usinga secondlever corresponding to the lever 26 in the construction shown in Figs. 1, 2', and 3 I fulcrum the bell-crank 22 so that its arm 22 shall be in position for en'- gagement with the lever 29, connected to the 13 In this form the bellengagement with the tooth and the motion.

movable elementsuch as the armature 30.

The result of this construction is that down.

pulls, by direct action of the movable'element through-its lever 29, the pawl and plate 11' forwardly, thus positively feeding the car-'- riage the proper predetermined space. Movement of the armature in the reverse direction when the circuit. is broken causes the pawl to move downwardly, disengaging it from the rack-bar, thence backwarcly with the plate 1 1, thereby resuming its normal position for engaging the next tooth. This fe'edng movement of the carriage is of course effected before the impression device is operated to' print. The other parts in this form are the same as hereinbefore described and operate in the same way, and in both cases it be observed that movement of the movableelement in one direction causes the pawl, to move upwardly and then forwardly-for the feeding motion of. the carriage, while the. movement of said movable element in .reverse direction causes the {pawl to move downwardly and then back-warly' to set it for engagement with the next tooth, these motions, however, occurring in. the reverse order in the two cases.

In the form shown in Figs. 1 to 6, the normal position of the pawlbein in engagement with the tooth, the motion is st downwardly and then b'ackwarily .to setit fofngagement with, the next tooth,'while in the form shown in Fig. 7 the pawl is normallyout of is therefore first upwardly and thence forwardly, thereby dispensing with the need of any spring connection and with an for holding the carriage requiring relhase before the carriage can be moved. The carriage'is thus free to be moved to the left, as wel as'to the ri ht, without'requirin as heretofore, there ease of any .carriageolding device, and I therefore define the carriage in this preferred form of-myinvention as freely movable.

It is obvious that the carri'age feeding devices may be applied to any machine wherein amovable element is controlled by thedepression of any key-lever, such movable element being connected to the carriage-feed devices through the medium of a lever, such as the lever 29.

The platen or paper-cylinder 35- is mounted in end frames 36, the spindle 37 of said cylinder havin pinion 38 on a s aft 40 in spring-hearings 39 whereby positive motion may beimparted means substantially as escribed. a gear 37 meshing with a to the'cylinder when it is desired to turn the same or by the hand-Wheel 40 on the spindle tact-rolls 41 of yielding material distributed throughout the length of the cylinder or in one-piece, as desire of different widths may be used without in- On the shaft 40 I mount frictional ton- By this means sheets volving any particular adjustment of parts,

as is needed ordinarily in machines of this type. V.

I have indicated conventionally a circuit includin the" magnet, in which a suitable circuit-c osing device is indicated at 4.2, the

battery being indicated MB, and the wires.

leading therefrom to the magnetiand to the circuitwblosing device, the .circuit being com pleted in a convenient way through the con ducting-frame of the machine.

I claim as my invention 1. Ina type writing machine, the combination with the operating mechanism of the machine, of a carriage'- having a rack-bar I thereon, a feed-pawl slidably carried on the frame of the machine, a movable element forming part of the operating mechanism of themachine, connections between said feedpawl and said movable element, whereby ,movement of'the movable element in one direction will impart distinct upward andforward movements to said feed-pawlto feed the carriage, and reverse movement'of said movable element will impart a downward ,and a backward movement to the feed-pawl to set the pawl for engagement with the next tooth of the rack bar, substantially as described.

. 2. In a type-writing machine, the combi-Q- nation with a carriage having a rack-bar thereonya plate slidably mounted on the frame of the machine, a feed-pawl slidably mounted in a guide on said plate, a movable element of the machine, connectionsbetween the pawl and the movableelement, whereby motion of the movable element in one direc-- tion will cause the pawl to move upwardly in its 'ds and then forwardly with the plate, an reverse motion of said movable element will cause said pawl to first slide downwardly in its guide andthen push the pawl and plate backwardly, substantially as described.

3t In a type-writing machine, the combination with a carria e having .a rackebar thereon, a plate slida lv supported .on the fixed frame, a pawl slidably. mounted'in a glide on said plat'e, said plate being held in ictional contact withits support greater than-the a link-connect the pawl frictional contact between the pawl and plate, a movable element of the nia- I25 with the levelled I 4. In. a type-writing machine, the combi:

nation with the operating mechanism of the machine,- of a carriage. slidably mounted the frame of the machine, of a rack-bar on said carriage, a plate slidabl mounted on the frame, a feed-pawl slidab y mounted on the plate, and means for imparting an upward motion of the pawl on the plate to engage another tooth and then a forward motion of the pawl and plate to positively feed the carriage, substantially as described.

6. In a type-writing machine, the combination with a carriage slidably mounted on the frame of the machine, of a rack on said carriage, a plate slidably mounted on the frame of the machine, a pawl slidably mounted in an inclined guide thereon, means for moving the pawl upwardly in its guide to engage another tooth of the rack and then forwardly with the plate to positively feed the carriage,.substantially as described.

7. In a type-writing machine, the combination with a carriage slidably mounted on the frame of the machine, of a rack on said carriage, a plate slidably mounted on the frame, a pawlslidably mounted in an inclined guide on said plate, a lever fulcrumed on the fixed frame, connections between said lever and an operating part of the machine,

whereby motion imparted to thelever inone direction willimpart an upward and forward motion to the pawl, and, in the other direction, a downward and backward motion, substantially as described.

8. In a type-writing machine, the combination with carriage slidably mounted on the frame of the machine, of a rack on said carriage, a plate slidably mounted on 'the fixed frame, a pawl slidably mounted in an ill-- clined guide onsaid plate, a bell-crank fulcrumed on the frame, alink connecting one arm of the bell-crankwith the pawl, connections betweenan operating part of the machine and the other arm of the bell-crank, whereby motion of said lever in one direction imparts'ian upward and forward motion to the pawland motion in the other direction a downward and backward thereto, substan tially as described.

9.1 In a t e-writingmachine, the combination of, t e operatm mechanism of the the frame of the machine, of a rack-bar onsaid carriage, a teed-pawl slidably carried on the frame of themachine, and positivelyacting means controlled'by the operating mechanism of the machine for movin the pawl out of engagement with one toot on the rack into position for another, tooth and then moving said pawl into-en gement with said latter tooth: for positive y feeding the carriage forward, substantially as described.

10. The combination with the carriage having tworacks thereon, a feed-pawl ada ted toengage'one rack for positively fee ing {he carriage forward, a second pawl yieldingy mounted on the fixed structure and having a roll adapted to engage the second rack and check the carriage, substantially as described.

11. In a type-writing machine, the combination with t e op'eratlng mechanism' of the machine, of a carria e freely movable to the right or left, of a paw slidably mounted upon the'frame of the machine for positively feeding the carriagforward, and positive connections between the pawland the operating mechanism of the machine for causing the pawl to engage the carriage and positivel move the same, substantially as describe In testimony whereof I have signed my machine, of a carriageshdably mounted upon name to this specification in the presence of y two' subscribing witnesses.

. HERMANN HILL.

Witnesses:

WM. L. GIGNILLIAT, T. F. Coon. 

